RING-LOCK 1019628 - Caterpillar

The engine can have a digital throttle that uses a Pulse Width Modulated (PWM) signal, an analog throttle or a multi-position switched throttle. The Electronic Control Module (ECM) must be programmed for the type of throttle input that is being used.
Table 1
Throttle 1     Throttle 2    
PWM (Digital Throttle)     Analog Throttle    
PWM (Digital Throttle)     None    
PWM (Digital Throttle)     Multi-position Throttle Switch    
Analog Throttle     Analog Throttle    
Analog Throttle     None    
Analog Throttle     Multi-position Throttle Switch    
None     Analog Throttle    
None     None    
None     Multi-position Throttle Switch    
Multi-position Throttle Switch     Analog Throttle    
Multi-position Throttle Switch     None    The throttle is set up using the electronic service tool. From the menu, select "Services". On the "Services" screen, select "Throttle Configuration". Select the type of throttle from the following list:
No throttle
Analog throttle
PWM throttle
Multi-position throttle switch
Illustration 1 g01785156
Typical Range of Throttle (1) Lower Diagnostic Limit (Default=5) (2) Lower Position Limit (Default=10) (3) Initial Lower Position (Default=20) (4) Idle Validation Minimum Off Threshold (Default=21) (5) Idle Validation Maximum On Threshold (Default=25) (6) Lower Dead Zone % (Default=8) (7) Upper Dead Zone % (Default=5) (8) Initial Upper Position (Default=70) (9) Upper Position Limit (Default=85) (10) Upper Diagnostic Limit (Default=95)PWM throttles require additional programming. If a multi-position switch is selected, additional parameters must be programmed. Refer to the Troubleshooting Guide, "Multiposition Switch Setup". If an analog throttle is selected, the following parameters must be programmed into the ECM.Idle Validation
All analog throttles on mobile applications require an idle validation switch. If this parameter is programmed to "Yes", the ECM will look for this switch input on pin J1:45 for Idle Validation Switch 1 (IVS1) and J1:44 for Idle Validation Switch 2 (IVS2).
Table 2
Values    Default    
No
Yes     Yes    Idle Validation Minimum Off (Open) Threshold
This is the minimum throttle percentage that will be detected by the ECM when the IVS is ON (Closed).If the ECM detects a throttle percentage below this value with the idle validation switch OFF (Open), a fault code will be generated and the engine will remain at idle.Refer to Table 3 and Table 4.
Table 3
Throttle Position Sensor (TPS)     Idle Validation Switch (IVS)     Throttle Demand Output     Fault Status     Comment    
TPS< IVS Min OFF     OFF     Minimum Position     Raise missing idle     Force throttle demand to minimum    
TPS< IVS Min OFF     ON     Throttle Position     Clear missing idle     Normal operation    
Table 4
Range    Default    
0 to 100%     21%    Idle Validation Maximum On (Closed) Threshold
This is the maximum throttle percentage that will be detected by the ECM when the idle validation switch (IVS) is OFF (Open) . When the idle validation switch is OFF (Open) and the ECM detects a signal that is higher than the programmed value for IVS Max ON, the ECM will generate a fault code and the engine will remain at idle.Refer to Table 5 and Table 6.
Table